Note 1 - Summary of Significant Accounting Policies - Segments (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Revenue	$ 286,151	$ 358,586	$ 541,392	$ 770,179
Segment Gain/(Loss)	1,465,104	$ (2,373,410)	(1,828,080)	$ (4,133,432)
Net Assets	22,291,588		22,291,588		$ 53,472
Domestic [Member]
Revenue	259,082		478,743
Segment Gain/(Loss)	(917,754)		(1,859,477)
Net Assets	741,497		741,497		628,451
International [Member]
Revenue	1,464		37,044
Segment Gain/(Loss)	(97,552)		(196,213)
Net Assets	34,841		34,841		41,377
Other Segments [Member]
Revenue	25,605		25,605
Segment Gain/(Loss)	2,480,410		227,610
Net Assets	$ 21,515,250		$ 21,515,250		$ (616,356)